Cleaning wipe

ABSTRACT

The present invention relates to a cleaning wipe which is a water insoluble substrate impregnated with a cleaning composition containing a cellulosic polymer.

RELATED APPLICATION

This application is a continuation in part application of U.S. Ser. No.10/412,957 filed Apr. 14, 2003 now U.S. Pat. No. 6,689,736 which in turnis a continuation in part application of U.S. Ser. No. 10/283,669 filedOct. 30, 2002 now U.S. Pat. No. 6,569,828 which in turn is acontinuation in part application of U.S. Ser. No. 10/086,165 filed Feb.27, 2002 now U.S. Pat. No. 6,432,904 which in turn is a continuation inpart application of U.S. Ser. No. 10/008,715 filed Nov. 13, 2001 nowU.S. Pat. No. 6,440,925.

FIELD OF INVENTION

The present invention relates to a cleaning wipe for dishware, teeth,human skin, hair and fabric which is a single or multi layer fabricsubstrate which has been impregnated with a liquid cleaning composition.

BACKGROUND OF THE INVENTION

The patent literature describes numerous wipes for both body cleaning,oral cleaning, fabric cleaning, hair cleaning and cleaning of hardsurfaces but none describe wipes for cleaning teeth, human skin, hair,fabrics or cleaning dishware, flatware, pots and pans. U.S. Pat. Nos.5,980,931, 6,063,397and 6,074,655 teach a substantially dry disposablepersonal cleansing product useful for both cleansing and conditioningthe skin and hair. U.S. Pat. No. 6,060,149 teaches a disposable wipingarticle having a substrate comprising multiple layers.

U.S. Pat. Nos. 5,756,612; 5,763,332; 5,908,707; 5,914,177; 5,980,922 and6,168,852 teach cleaning compositions which are inverse emulsions.

U.S. Pat. Nos. 6,183,315 and 6,183,763 teach cleaning compositionscontaining a proton donating agent and having an acidic pH. U.S. Pat.Nos. 5,863,663; 5,952,043; 6,063,746 and 6,121,165 teaches cleaningcompositions which are oil in water emulsions.

SUMMARY OF THE INVENTION

A single use cleaning wipe for dishwashing application comprises a waterinsoluble substrate, impregnated with a cleaning composition containingat least one surfactant, a cellulosic polymer and water.

The liquid cleaning compositions of this invention are not an emulsionand do not contain potassium sorbate, a polysaccharide polymer, apolycarboxylate polymer, polyvinyl alcohol polymer, polyvinylpyrrolidonepolymer or methyl vinyl ether polymer.

DETAILED DESCRIPTION OF THE INVENTION

The present invention relates to a cleaning wipe for dishware, flatware,pots and pans which comprises approximately by weight:

(a) 5% to 80% of a cleaning composition which comprises approximately byweight:

(i) 0.5% to 12% of a water soluble cellulosic polymer selected from thegroup consisting of methyl cellulose and hydroxypropyl methyl celluloseand mixtures thereof;

(ii) 15% to 50% of at least one surfactant selected from the groupconsisting of alkali metal salts of a fatty acids, ethoxylated nonionicsurfactants, amine oxide surfactants, alkyl polyglucoside surfactants,zwitterionic surfactants, anionic surfactants and C₁₂-C₁₄ fatty acidmonoalkanol amides and mixtures thereof;

(iii) 5 to 50%, more preferably 8% to 40% of at least one solubilizingagent;

(iv) 0 to 0.5%, more preferably 0.05% to 0.25%, of an antibacterialagent;

(v) 0 to 6%, more preferably 0.05% to 3% of a perfume; and

(vi) the balance being water, wherein the composition does not containpotassium sorbate, a polysaccharide polymer, a polycarboxylate polymer,polyvinyl alcohol polymer, polyvinylpyrrolidone polymer or methyl vinylether polymer; and

(b) 20% to 95% of a water insoluble substrate, wherein said waterinsoluble substrate is impregnated with said cleaning composition.

The anionic surfactants which may be used in the detergent film of thisinvention are water soluble and include the sodium, potassium, ammoniumand ethanolammonium salts of C₈-C₁₈ alkyl sulfates such as laurylsulfate, myristyl sulfate and the like; linear C₈-C₁₆ alkyl benzenesulfonates; C₁₀-C₂₀ paraffin sulfonates; alpha olefin sulfonatescontaining about 10-24 carbon atoms; C₈-C₁₈ alkyl sulfoacetates; C₈-C₁₈alkyl sulfosuccinate esters; C₈-C₁₈ acyl isethionates; and C₈-C₁₈ acyltaurates Preferred anionic surfactants are the water soluble C₁₂-C₁₆alkyl sulfates, the C₁₀-C₁₅ alkylbenzene sulfonates, the C₁₃-C₁₇paraffin sulfonates and the alpha C₁₂-C₁₈ olefin sulfonates.

The higher alkyl mononuclear aromatic sulfonates, such as the higheralkylbenzene sulfonates containing 9 to 18 or preferably 9 to 16 carbonatoms in the higher alkyl group in a straight or branched chain. Apreferred alkylbenzene sulfonate is a linear alkylbenzene sulfonatehaving a higher content of 3-phenyl (or higher) isomers and acorrespondingly lower content (well below 50%) of 2-phenyl (or lower)isomers, such as those sulfonates wherein the benzene ring is attachedmostly at the 3 or higher (for example 4, 5, 6 or 7) position of thealkyl group and the content of the isomers in which the benzene ring isattached in the 2 or 1 position is correspondingly low. Preferredmaterials are set forth in U.S. Pat. No. 3,320,174, especially those inwhich the alkyls are of 10 to 13 carbon atoms.

Examples of suitable other sulfonated anionic detergents are the wellknown. The paraffin sulfonates may be monosulfonates or di-sulfonatesand usually are mixtures thereof, obtained by sulfonating paraffins of10 to 20 carbon atoms. Preferred paraffin sulfonates are those of C₁₂₋₁₈carbon atoms chains, and more preferably they are of C₁₄₋₁₇ chains.Paraffin sulfonates that have the sulfonate group(s) distributed alongthe paraffin chain are described in U.S. Pat. Nos. 2,503,280; 2,507,088;3,260,744; and 3,372,188; and also in German Patent 735,096. Suchcompounds may be made to specifications and desirably the content ofparaffin sulfonates outside the C₁₄₋₁₇ range will be minor and will beminimized, as will be any contents of di- or poly-sulfonates.

The C₈₋₁₈ ethoxylated alkyl ether sulfate surfactants have the structure

R—(OCHCH₂)_(n)OSO₃ ^(M) ^(⁻⁺)

wherein n is about 1 to about 22 more preferably 1 to 3 and R is analkyl group having about 8 to about 18 carbon atoms, more preferably 12to 15 and natural cuts, for example, C₁₂₋₁₄ or C₁₂₋₁₆ and M is anammonium cation or a metal cation, most preferably sodium.

The ethoxylated alkyl ether sulfate may be made by sulfating thecondensation product of ethylene oxide and C₈₋₁₀ alkanol, andneutralizing the resultant product. The ethoxylated alkyl ether sulfatesdiffer from one another in the number of carbon atoms in the alcoholsand in the number of moles of ethylene oxide reacted with one mole ofsuch alcohol. Preferred ethoxylated alkyl ether polyethenoxy sulfatescontain 12 to 15 carbon atoms in the alcohols and in the alkyl groupsthereof, e.g., sodium myristyl (3 EO) sulfate.

Ethoxylated C₈₋₁₈ alkylphenyl ether sulfates containing from 2 to 6moles of ethylene oxide in the molecule are also suitable for use in theinvention compositions. These detergents can be prepared by reacting analkyl phenol with 2 to 6 moles of ethylene oxide and sulfating andneutralizing the resultant ethoxylated alkylphenol.

The C₁₂-C₂₀ paraffin sulfonates may be monosulfonates or di-sulfonatesand usually are mixtures thereof, obtained by sulfonating paraffins of10 to 20 carbon atoms. Preferred paraffin sulfonates are those of C₁₂₋₁₈carbon atoms chains, and more preferably they are of C₁₄₋₁₇ chains.Paraffin sulfonates that have the sulfonate group(s) distributed alongthe paraffin chain are described in U.S. Pat. Nos. 2,503,280; 2,507,088;3,260,744 and 3,372,188 and also in German Patent 735,096. Suchcompounds may be made to specifications and desirably the content ofparaffin sulfonates outside the C₁₄₋₁₇ range will be minor and will beminimized, as will be any contents of di- or poly-sulfonates.

The present invention can also contain alpha olefin sulfonates,including long-chain alkene sulfonates, long-chain hydroxyalkanesulfonates or mixtures of alkene sulfonates and hydroxyalkanesulfonates. These alpha olefin sulfonate surfactants may be prepared ina known manner by the reaction of sulfur trioxide (SO₃) with long-chainolefins containing 8 to 25, preferably 12 to 21 carbon atoms and havingthe formula RCH═CHR₁ where R is a higher alkyl group of 6 to 23 carbonsand R₁ is an alkyl group of 1 to 17 carbons or hydrogen to form amixture of sultones and alkene sulfonic acids which is then treated toconvert the sultones to sulfonates. Preferred alpha olefin sulfonatescontain from 14 to 16 carbon atoms in the R alkyl group and are obtainedby sulfonating an a-olefin.

The long chain fatty acids are the higher aliphatic fatty acids havingfrom about 8 to 22 carbon atoms, more preferably from about 10 to 20carbon atoms, and especially preferably from about 12 to 18 carbonatoms, and especially preferably from 12 to 18 carbon atoms, inclusiveof the carbon atom of the carboxyl group of the fatty acid. Thealiphatic radical may be saturated or unsaturated and may be straight orbranched. Straight chain saturated fatty acids are preferred. Mixturesof fatty acids may be used, such as those derived from natural sources,such as tallow fatty acid, coco fatty acid, soya fatty acid, mixtures ofthese acids, etc. Stearic acid and mixed fatty acids, e.g. stearicacid/palmitic acid, are preferred.

Thus, examples of the fatty acids include, for example, decanoic acid,dodecanoic acid, palmitic acid, myristic acid, stearic acid, behenicacid, oleic acid, eicosanoic acid, tallow fatty acid, coco fatty acid,soya fatty acid, mixtures of these acids, etc. Stearic acid and mixedfatty acids, e.g. stearic acid/palmitic acid, are preferred.

The nonionic surfactants which are used in the instant cleaningcomposition are selected from the group of an aliphatic ethoxylatednonionic surfactant and an aliphatic ethoxylated/propoxylated nonionicsurfactant and mixtures thereof.

The water soluble aliphatic ethoxylated nonionic surfactants utilized inthis invention are commercially well known and include the primaryaliphatic alcohol ethoxylates and secondary aliphatic alcoholethoxylates. The length of the polyethenoxy chain can be adjusted toachieve the desired balance between the hydrophobic and hydrophilicelements.

The nonionic surfactant class includes the condensation products of ahigher alcohol (e.g., an alkanol containing about 8 to 16 carbon atomsin a straight or branched chain configuration) condensed with about 4 to20 moles of ethylene oxide, for example, lauryl or myristyl alcoholcondensed with about 16 moles of ethylene oxide (EO), tridecanolcondensed with about 6 to 15 moles of EO, myristyl alcohol condensedwith about 10 moles of EO per mole of myristyl alcohol, the condensationproduct of EO with a cut of coconut fatty alcohol containing a mixtureof fatty alcohols with alkyl chains varying from 10 to about 14 carbonatoms in length and wherein the condensate contains either about 6 molesof EO per mole of total alcohol or about 9 moles of EO per mole ofalcohol and tallow alcohol ethoxylates containing 6 EO to 11 EO per moleof alcohol.

A preferred group of the foregoing nonionic surfactants are the Neodolethoxylates (Shell Co.), which are higher aliphatic, primary alcoholcontaining about 9-15 carbon atoms, such as C₉-C₁₁ alkanol condensedwith 4 to 10 moles of ethylene oxide (Neodol 91-8 or Neodol 91-5),C₁₂₋₁₃ alkanol condensed with 6.5 moles ethylene oxide (Neodol 23-6.5),C₁₂₋₁₅ alkanol condensed with 12 moles ethylene oxide (Neodol 25-12),C₁₄₋₁₅ alkanol condensed with 13 moles ethylene oxide (Neodol 45-13),and the like. Such ethoxamers have an HLB (hydrophobic lipophilicbalance) value of about 8 to 15 and give good O/W emulsification,whereas ethoxamers with HLB values below 7 contain less than 4ethyleneoxide groups and tend to be poor emulsifiers and poordetergents.

Additional satisfactory water soluble alcohol ethylene oxide condensatesare the condensation products of a secondary aliphatic alcoholcontaining 8 to 18 carbon atoms in a straight or branched chainconfiguration condensed with 5 to 30 moles of ethylene oxide. Examplesof commercially available nonionic detergents of the foregoing type areC₁₁-C₁₅ secondary alkanol condensed with either 9 EO (Tergitol 15-S-9)or 12 EO (Tergitol 15-S-1 2) marketed by Union Carbide.

One of the water soluble nonionic surfactants which can be utilized inthis invention are an aliphatic ethoxylated/propoxylated nonionicsurfactants which are depicted by the formula:

RO(CH₂CH₂O)_(x)(CH₂CH₂CH₂O)_(y)H

or

CH₃

RO(CH₂CH₂O)_(x)(CH₂CHO)_(y)H

wherein R is a branched chain alkyl group having about 10 to about 16carbon atoms, preferably an isotridecyl group and x and y areindependently numbered from 1 to 20. A preferredethoxylated/propoxylated nonionic surfactant is Plurafac® 300manufactured by BASF.

The water-soluble zwitterionic surfactant, which can also be usedprovides good foaming properties and mildness. The zwitterionicsurfactant is a water soluble betaine having the general formula:

wherein R₁ is an alkyl group having 10 to 20 carbon atoms, preferably 12to 16 carbon atoms, or the amido radical:

wherein R is an alkyl group having 9 to 19 carbon atoms and a is theinteger 1 to 4; R₂ and R₃ are each alkyl groups having 1 to 3 carbonsand preferably 1 carbon; R₄ is an alkylene or hydroxyalkylene grouphaving from 1 to 4 carbon atoms and, optionally, one hydroxyl group.Typical alkyldimethyl betaines include decyl dimethyl betaine or2-(N-decyl-N, N-dimethyl-ammonia) acetate, coco dimethyl betaine or2-(N-coco N, N-dimethylammonio) acetate, myristyl dimethyl betaine,palmityl dimethyl betaine, lauryl diemethyl betaine, cetyl dimethylbetaine, stearyl dimethyl betaine, etc. The amidobetaines similarlyinclude cocoamidoethylbetaine, cocoamidopropyl betaine and the like. Apreferred betaine is coco (C₈-C₁₈) amidopropyl dimethyl betaine.

Amine oxide semi-polar nonionic surfactants comprise compounds andmixtures of compounds having the formula:

wherein R₁ is an alkyl, 2-hydroxyalkyl, 3-hydroxyalkyl, or3-alkoxy-2-hydroxypropyl radical in which the alkyl and alkoxy,respectively, contain from 8 to 18 carbon atoms, R₂ and R₃ are eachmethyl, ethyl, propyl, isopropyl, 2-hydroxyethyl, 2-hydroxypropyl, or3-hydroxypropyl, and n is from 0 to 10. Particularly preferred are amineoxides of the formula:

wherein R₁ is a C₁₂₋₁₆ alkyl and R₂ and R₃ are methyl or ethyl. Theabove ethylene oxide condensates, amides, and amine oxides are morefully described in U.S. Pat. No. 4,316,824 which is hereby incorporatedherein by reference.

The alkyl polysaccharides surfactants, which can be used have ahydrophobic group containing from about 8 to about 20 carbon atoms,preferably from about 10 to about 16 carbon atoms, most preferably fromabout 12 to about 14 carbon atoms, and polysaccharide hydrophilic groupcontaining from about 1.5 to about 10, preferably from about 1.5 toabout 4, most preferably from about 1.6 to about 2.7 saccharide units(e.g., galactoside, glucoside, fructoside, glucosyl, fructosyl; and/orgalactosyl units). Mixtures of saccharide moieties may be used in thealkyl polysaccharide surfactants. The number x indicates the number ofsaccharide units in a particular alkyl polysaccharide surfactant. For aparticular alkyl polysaccharide molecule x can only assume integralvalues. In any physical sample of alkyl polysaccharide surfactants therewill be in general molecules having different x values. The physicalsample can be characterized by the average value of x and this averagevalue can assume non-integral values. In this specification the valuesof x are to be understood to be average values. The hydrophobic group(R) can be attached at the 2-, 3-, or 4-positions rather than at the1-position, (thus giving e.g. a glucosyl or galactosyl as opposed to aglucoside or galactoside). However, attachment through the 1-position,i.e., glucosides, galactoside, fructosides, etc., is preferred. In thepreferred product the additional saccharide units are predominatelyattached to the previous saccharide unit's 2-position. Attachmentthrough the 3-, 4-, and 6-positions can also occur. Optionally and lessdesirably there can be a polyalkoxide chain joining the hydrophobicmoiety (R) and the polysaccharide chain. The preferred alkoxide moietyis ethoxide.

Typical hydrophobic groups include alkyl groups, either saturated orunsaturated, branched or unbranched containing from about 8 to about 20,preferably from about 10 to about 18 carbon atoms. Preferably, the alkylgroup is a straight chain saturated alkyl group. The alkyl group cancontain up to 3 hydroxy groups and/or the polyalkoxide chain can containup to about 30, preferably less than about 10, alkoxide moieties.

Suitable alkyl polysaccharides are decyl, dodecyl, tetradecyl,pentadecyl, hexadecyl, and octadecyl, di-, tri-, tetra-, penta-, andhexaglucosides, galactosides, lactosides, fructosides, fructosyls,lactosyls, glucosyls and/or galactosyls and mixtures thereof.

The alkyl monosaccharides are relatively less soluble in water than thehigher alkyl polysaccharides. When used in admixture with alkylpolysaccharides, the alkyl monosaccharides are solubilized to someextent. The use of alkyl monosaccharides in admixture with alkylpolysaccharides is a preferred mode of carrying out the invention.Suitable mixtures include coconut alkyl, di-, tri-, tetra-, andpentaglucosides and tallow alkyl tetra-, penta-, and hexaglucosides.

The preferred alkyl polysaccharides are alkyl polyglucosides having theformula

R₂O(C_(n)H_(2n)O)r(Z)_(x)

wherein Z is derived from glucose, R is a hydrophobic group selectedfrom the group consisting of alkyl, alkylphenyl, hydroxyalkylphenyl, andmixtures thereof in which said alkyl groups contain from about 10 toabout 18, preferably from about 12 to about 14 carbon atoms; n is 2 or 3preferably 2, r is from 0 to 10, preferable 0; and x is from 1.5 to 8,preferably from 1.5 to 4, most preferably from 1.6 to 2.7. To preparethese compounds a long chain alcohol (R₂OH) can be reacted with glucose,in the presence of an acid catalyst to form the desired glucoside.Alternatively the alkyl polyglucosides can be prepared by a two stepprocedure in which a short chain alcohol (R₁OH) can be reacted withglucose, in the presence of an acid catalyst to form the desiredglucoside. Alternatively the alkyl polyglucosides can be prepared by atwo step procedure in which a short chain alcohol (C₁₋₆) is reacted withglucose or a polyglucoside (x=2 to 4) to yield a short chain alkylglucoside (x=1 to 4) which can in turn be reacted with a longer chainalcohol (R₂OH) to displace the short chain alcohol and obtain thedesired alkyl polyglucoside. If this two step procedure is used, theshort chain alkylglucosde content of the final alkyl polyglucosidematerial should be less than 50%, preferably less than 10%, morepreferably less than about 5%, most preferably 0% of the alkylpolyglucoside.

The amount of unreacted alcohol (the free fatty alcohol content) in thedesired alkyl polysaccharide surfactant is preferably less than about2%, more preferably less than about 0.5% by weight of the total of thealkyl polysaccharide. For some uses it is desirable to have the alkylmonosaccharide content less than about 10%.

The used herein, “alkyl polysaccharide surfactant” is intended torepresent both the preferred glucose and galactose derived surfactantsand the less preferred alkyl polysaccharide surfactants. Throughout thisspecification, “alkyl polyglucoside” is used to include alkylpolyglycosides because the stereochemistry of the saccharide moiety ischanged during the preparation reaction.

An especially preferred APG glycoside surfactant is APG 625 glycosidemanufactured by the Henkel Corporation of Ambler, Pa. APG25 is anonionic alkyl polyglycoside characterized by the formula:

 C_(n)H_(2n+1)O(C₆H₁₀O₅)_(x)H

wherein n=10 (2%); n=122 (65%); n=14 (21-28%); n=16 (4-8%) and n=18(0.5%) and x (degree of polymerization)=1.6. APG 625 has: a pH of 6 to10 (10% of APG 625 in distilled water); a specific gravity at 25° C. of1.1 g/ml; a density at 25° C. of 9.1 lbs/gallon; a calculated HLB of12.1 and a Brookfield viscosity at 35C, 21 spindle, 5-10 RPM of 3,000 to7,000 cps.

The cleaning composition can also contain a mixture of a C₁₂₋₁₄ alkylmonoalkanol amide such as lauryl monoalkanol amide and a C₁₂₋₁₄ alkyldialkanol amide such as lauryl diethanol amide or coco diethanol amide.

As used herein and in the appended claims the term “perfume” is used inits ordinary sense to refer to and include any non-water solublefragrant substance or mixture of substances including natural (i.e.,obtained by extraction of flower, herb, blossom or plant), artificial(i.e., mixture of natural oils or oil constituents) and syntheticallyproduced substance) odoriferous substances. Typically, perfumes arecomplex mixtures of blends of various organic compounds such asalcohols, aldehydes, ethers, aromatic compounds and varying amounts ofessential oils (e.g., terpenes) such as from 0% to 80%, usually from 10%to 70% by weight, the essential oils themselves being volatileodoriferous compounds and also serving to dissolve the other componentsof the perfume.

In the present invention the precise composition of the perfume is of noparticular consequence to cleaning performance so long as it meets thecriteria of water immiscibility and having a pleasing odor. Naturally,of course, especially for cleaning compositions intended for use in thehome, the perfume, as well as all other ingredients, should becosmetically acceptable, i.e., non-toxic, hypoallergenic, etc.

The cleaning composition can contain 0.1 wt. % to 50 wt. % at least onesolubilizing agent selected from the group consisting of a C₂₋₅ mono,dihydroxy or polyhydroxy alkanols such as ethanol, isopropanol, glycerolethylene glycol, diethylene glycol, propylene glycol, and hexyleneglycol and mixtures thereof, urea, and alkali metal cumene or xylenesulfonates such as sodium cumene sulfonate and sodium xylene sulfonate.

The cleaning composition of this invention may, if desired, also containother components either to provide additional effect or to make theproduct more attractive to the consumer. The following are mentioned byway of example: Colors or dyes in amounts up to 0.5% by weight; pHadjusting agents, such as sulfuric acid or sodium hydroxide, can be usedas needed.

The composition can optionally contain 0.05 wt. % to 6 wt. % of acompound selected from the group consisting of a proton donating agentsuch as alpha hydroxy acid such as lactic or citric acid, anantibacterial agent, hydrogen peroxide or an organic peroxide.Additionally, the composition can contain moisturizers, embollients,organic and/or inorganic builders, bleaching agents and/or fabricsoftening agents.

Preservatives which can be used in the instant compositions at aconcentration of 0.005 wt. % to 3 wt. %, more preferably 0.01 wt. % to2.5 wt. % are: benzalkonium chloride; benzethoniumchloride,5-bromo-5-nitro-1,3dioxane; 2-bromo-2-nitropropane-1,3-diol;alkyl trimethyl ammonium bromide; N-(hydroxymethyl)-N-(1,3-dihydroxymethyl-2,5-dioxo-4-imidaxolidinyl-N′-(hydroxy methyl) urea;1-3-dimethyol-5,5-dimethyl hydantoin; formaldehyde; iodopropynl butylcarbamata, butyl paraben; ethyl paraben; methyl paraben; propyl paraben,mixture of methyl isothiazolinone/methyl-chloroisothiazoline in a 1:3wt. ratio; mixture of phenoxythanol/butyl paraben/methylparaben/propylparaben; 2-phenoxyethanol;tris-hydroxyethyl-hexahydrotriazine; methylisothiazolinone;5-chloro-2-methyl-4-isothiazolin-3-one; 1,2-dibromo-2,4-dicyanobutane;1-3-chloroalkyl)-3,5,7-triaza-azoniaadamantane chloride; and sodiumbenzoate. PH adjusting agents such as sulfuric acid or sodium hydroxidecan be used as needed.

The cellulosic polymer which is used in the cleaning composition isselected from the group consisting of methyl cellulose and hydroxypropyl methyl cellulose Dow Chemical manufactures these cellulosicpolymers under the tradename Methocel. The following chart set forthsuitable Methocel polymer useful in the instant invention.

Methoxyl Hydroxypr pyl degre Methoxyl degre f Hydroxypr pyl fsubstitution (%) substituti n (%) Methocel A 1.8 30 — — Methocel E 1.929 0.23 8.5 Methocel F 1.8 28 0.13 5.0 Methocel J 1.3 18 0.82 27Methocel K 1.4 22 0.21 8.1 Methocel 2.0 25 0.8  25 310 Series

The cellulosic polymer acts to regulate and slow the release of thecleaning composition from the water insoluble substrate.

The cleaning composition is made by preparing aqueous surfactantsolution and a aqueous polymeric solution of the cellulosic polymer at a12 wt. % to 18 wt. % of the cellulosic polymer. The surfactantcomposition solution and the polymeric solution are mixed by simplemixing at room temperature in a 4:1 to 1:4 weight ratio to form thecleaning solution which is to impregnate the water insoluble substrate.

The bottom and top layers may have different textures and abrasiveness.

Differing textures can result from the use of different combinations ofmaterials or from the use of different manufacturing processes or acombination thereof. A dual texture substrate can be made to provide theadvantage of a more abrasive side for cleaning difficult to removesoils. A softer side can be used for more delicate or less soiledsurfaces. The substrate should not dissolve or break apart in water. Itis the vehicle for delivering the cleaning composition to dishware,flatware, pots and pans. Use of the substrate enhances lathering,cleaning and grease removal.

A wide variety of materials can be used as the substrate. It should havesufficient wet strength, abrasivity, loft and porosity. Examplesinclude, non woven substrates, wovens substrates, hydroentangledsubstrates and sponges.

Examples of suitable non woven water insoluable substrates include, 100%cellulose Wadding Grade 1804 from Little Rapids Corporation, 100%polypropylene needlepunch material NB 701-2.8 -W/R from AmericanNon-wovens Corporation, a blend of cellulosic and syntheticfibres-Hydraspun 8579 from Ahlstrom Fibre Composites, and &0%Viscose/30% PES Code 9881 from PGI Nonwovens Polymer Corp.

Another useful substrate is manufactured by Jacob Holm-Lidro Rough'nSoft. It is a composition material comprising a 65/35 viscoserayon/polyester hydroentangled spunlace layer with a hydroenlongatedbonded polyeser scribbly layer.

Still another useful substrate is manufactured by Texel. It is acomposite material manufactured from a top layer of coarse fiber 100%polypropylene needlepunch, a center layer of an absorbent cellulose coremanufactured by Little Rapids Corporation as Waddy Grade 1804 and abottom layer of a fine fiber polyester layer needlepunched together. Thepolypropylene layer can range from 1.5 to 3.5 oz/sq. yd. The cellulosecore is a didn't we hear that the use of the word “crepe” bringsproblems- or is that just saying “crepe paper” and not “creped paper”?paper layer ranging from 0.5 to 2 oz./sq. yd. The fine fiber polyesterlayer can range from 0.5 to 2 oz./sq. yd. At least 50 wt. % of theimpregnated cleaning composition is contained within the cleaningcellulose core layer.

The product of the present invention comprising multiple layers may beultrasonically bonded with appropriate choice of materials afterapplying the coating of one or more of the layers. Alternatively layersmay be bonded together by needlepunch, thermal bonding, chemicalbonding, or sonic bonding prior to impregnation.

The following examples illustrate liquid cleaning compositions of thedescribed invention. Unless otherwise specified, all percentages are byweight. The exemplified compositions are illustrative only and do notlimit the scope of the invention. Unless otherwise specified, theproportions in the examples and elsewhere in the specification are byweight.

EXAMPLE 1

The following composition (in wt. %) was prepared by simple batch mixingat room temperature. The cleaning wipe was made by the previouslydescribed impregnation process.

Part I A Sodium linear alkyl benzene sulfonate 23.6 Methyl cellulose 1.4Ethanol 33 Sodium bisulfite Water Bal. Part 1 Formula A 1 Fabricsubstrate 1 ¹Top coarse fiber 100% propylene layer, center celluloselayer (Waddington Grade 1804) and bottom fine fiber polyester layerwherein layers are needle punched together.

While particular embodiments of the invention and the best modecontemplated by the inventors for carrying out the invention have beenshown, it will be understood, of course, that the invention is notlimited thereto since modifications may be made by those skilled in theart, particularly in light of the foregoing teachings. It is, therefore,contemplated by the appended claims to cover any such modifications asincorporate those features which constitute the essential features ofthese improvements within the true spirit and scope of the invention.

What is claimed:
 1. A cleaning wipe which comprises approximately byweight: (a) 20% to 95% of a water insoluble substrate; and (b) 5% to 80%of a cleaning composition which comprises approximately by weight: (i)0.5% to 12% of a water soluble cellulosic polymer selected from thegroup consisting of methyl cellulose and hydroxypropyl methyl celluloseand mixtures thereof; and (ii) 15% to 50% of at least one surfactantselected from the group consisting of alkali metal salts of a fattyacid, amine oxide surfactants, alkyl polyglucoside surfactants,zwitterionic surfactants, anionic surfactants and C₁₂-C₁₄ fatty acidmonoalkanol amides and mixtures thereof; and (iii) the balance beingwater, wherein said water insoluble substrate is impregnated with saidcleaning composition and the composition does not contain potassiumsorbate, a polysaccharide polymer, a polycarboxylate polymer, polyvinylalcohol polymer, polyvinylpyrrolidone polymer or methyl vinyl etherpolymer.
 2. A wipe according to claim 1 wherein said cleaningcomposition further includes 0.1 wt. % to 1.5 wt. % of a perfume.
 3. Awipe according to claim 1, wherein said water insoluble substratescomprises a top layer bonded to a bottom layer.
 4. A wipe according toclaim 3, wherein said top layer comprises a coarse fiber polypropyleneneedlepunched and said bottom layer comprises a fine fiber polyesterneedlepunched.
 5. A wipe according to claim 1, wherein said waterinsoluble substrate comprises a top layer, a center layer and a bottomlayer, wherein said bottom layer, said center layer and said top layerare bonded together.
 6. A wipe according to claim 5, wherein said toplayer is a coarse fiber polypropylene, said center layer is an absorbentcellulose core and said bottom layer is a fine fiber polyesterneedlepunched.
 7. A wipe according to claim 6, wherein said center layercontains at least 50 wt. % said cleaning solution.
 8. A wipe accordingto claim 1 further including 0.1 wt. % to 50 wt. % of at least onesolubilizing agent.